# Hazardous Materials; Packages Intended for Transport by Aircraft
> **Pipeline and Hazardous Materials Safety Administration** · Final rule. · Published 2012-04-16 · Effective 2012-07-01 · 77 FR 22504
## Document
- **Document number:** 2012-8978
- **Category:** pipeline-safety
- **Sub-agency:** Pipeline and Hazardous Materials Safety Administration
- **Federal Register citation:** 77 FR 22504
- **CFR reference:** 49 CFR 173
- **Publication date:** 2012-04-16
- **Effective date:** 2012-07-01
- **DOT docket:** Docket No. PHMSA-07-29364 (HM-231A)
## Abstract

PHMSA is amending the Hazardous Materials Regulations to require closures of inner packagings containing liquids within a combination packaging intended for transportation by aircraft to be secured by a secondary means or, where a secondary closure cannot be applied or it is impracticable to apply, permit the use of a leakproof liner. These amendments are consistent with the 2011-2012 edition of the International Civil Aviation Organization Technical Instructions for the Safe Transport of Dangerous Goods by Air (ICAO Technical Instructions).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/04/16/2012-8978/hazardous-materials-packages-intended-for-transport-by-aircraft)
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